Display screen with a transitional graphical user interface



FIG. 1 is the first image in a sequence for a display screen with a transitional graphical user interface;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof; and,

FIG. 4 is the fourth image thereof.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-4. The process or period in which one image transitions to another image forms no part of the claimed design. In the drawings, the dash-dot-dash broken lines showing a display screen forms no part of the claimed design. 

CLAIM The ornamental design for a display screen with a transitional graphical user interface, as shown and described. 